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Individuals with Gastrointestinal Conditions: Certain gastrointestinal conditions, such as celiac disease, Crohns disease, or gastrointestinal surgery, can impair nutrient absorption
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The exact magnitude varies widely, from modest improvements to dramatic transformations depending on starting point and adherence
Low B12 causes weakness, fatigue, and depression, but also other symptoms, including numbness or tingling in the hands, feet, and legs
Put the needle in at a 45-degree angle
Absent intrinsic factor is often associated with a condition called atrophic gastritis, a thinning of the lining of the stomach
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